Whistling signal for fluid delivery hose



Dec. 8, 1936. w. T. OXLEY 2,063,696

'WHISTLING-SIGNAL FOR FLUID, DELIVERY HOSE Filed Dec. 9, 1935 ed Dec. 8, 1936 I Patent UNITED-STATES WHISTLING SIGNAL FOR FLUID DELIVERY nosn Walter 'r. :xley, l 'ergus Falls, Mimi.

' Application December 9, 1935, Serial No. 53,45

4' Claims. (c 22666) My invention provides an extremely simple and highly eflicient device adapted for attachment to the discharge nozzle or end of a liquid delivery pipe to indicate when a receptacle has been fllled to the maximum point of safety, and, generally stated, the invention consists of the novel devices and combinations of devices hereinafter-described and defined in the claims.

More particularly, the invention is designed for application to'and used in connection with the nozzles of gasoline discharge pipes such as used in filling automobile tanks. The signalling device is in the nature of a whistle connected with a source'of air supply under light pressure and attached to the discharge nozzle of the gasoline delivery hose. Such nozzles are usually in the form of flexible tubes capable of ,being bent to the best form for insertion into the neck of gasoline tanks; and in the application of the whistling attachment thereto, the air tube connectedfor delivery to the whistle is also a flexible structure such as a small rubber hose, the receiving end of which is connected to the source of air supply and is also flexible.

u A preferred form and application of the invention is illustrated in the accompanying drawing wherein like characters indicate like parts throughout the several views.

Referring to the drawing:

, Fig. 1 is a view chiefly in side elevation showing the whistling attachment applied to the flexible discharge nozzle ofa gasoline hose with the nozzle positioned for delivery into the receiving neck of a gasoline tank, such as an automobile tank, portions of the tankbeing broken away and parts shown being in section; I

'Fig. 2 is an enlarged fragmentary view partly in elevation and partly in section illustrating the preferredform of the whistling attachment;

I Fig. 3 is a perspective showing the whistlingattachment removed from the gasoline nozzle;

and

Fig. '4 is a fragmentary plan illustrating means for collapsing the tube and closing the air passage 4! through the flexible air tube.

neck portion of a gasoline tank such as that employed in automobiles, the numeral 6 indicates the ordinary rubber gasoline delivery hose, to the 50 delivery end of which is attached the discharge nozzle made up of a rigid metallic portion I and a flexible portion 8, which latter is usually of the well-known metallic flexible tube type. In the rigid section I of the nozzle is the customary nor- 5 mally closed valve mechanism 9 which is adapted In Fig. l, the numeral 5 indicates the receiving to be opened by upward pressure on a valve-operating trigger l0 mounted in a yoke I l secured to said section I.

The nozzle attachment proper includes a whistle that is attached to the delivery end of the flexible 5 section 8 of the nozzle. As shown and preferably .arranged, this whistle, which is indicated as an entirety by the numeral I2, is rigidly attached to a tubular metallic nozzle cap l3. The extreme lower end of this whistle I2 is open, as shown at 10 I4, this feature being important. The nozzle l3 cap may be permanently or detachably connected to the end of the flexible nozzle section 8, but as shown it is made detachable by means of a plurality of spring arms or clips I5 '15 attached to said nozzle cap and having inturned ends adapted to engage and.interlock with the grooves formed in the flexible section 8. The

lower end of the whistle I4 is preferablyv considerably above the lower open end ofthe nozzle cap l3. g The upper end of the whistle I2 is connectedto a small rubber tube ii that leads from a source of air supply under pressure such as a tank, not

shown, having a discharge pipe, I! between which and the receiving end of the tube l 6 is interposed a reduction valvev l8 and a manually operated cut-01f, valve l9. 'Also as shown, there is a pressure gauge 20 which indicates the pressure delivered to the air tube l6 and which pressure is found to be. preferably approximately five pounds -per square inch.

The rubber tube I6 will be of sufficient length to permit the ordinary movements of the gasoline hose 6 and its nozzle and, preferably and as shown, its intermediate portion passed between lugs 2| on the nozzle section 1 and adapted to be pinched to close the tube and cut oil passage of air therethrough by suitable means such as an eccentric clamp 22 pivoted to the lugs 2| and operated in lieu of a valve to cut all the supply of air through the air tube when thewhistle is to be cut outv of action. 1

With the arrangement described and with the nozzle positioned as or substantially as shown in Fig. 1, as long as the gasoline in the tank 5 1 is below the lower open end of the whistle M, the flow of air under the five pounds pressure directly through the-1 whistle and out of the open lower end thereof will not produce a whistling action, but when the gasoline in the tank rises to such elevation that it will close the normally open lower end of the whistle, then all 01' the air under the five pounds pressure delivered to .the whistle will be discharged through the whistle notch I20 and a whistling action will be produced, clearly and positively indicating that thefilling of the tank has been completed to the maximumpoint of safety, avoiding overflow.

Obviously, the whistle will be in conditionfor operation under the above conditions only when the air tube I6 is not choked by the eccentric 22 and also, of course, when the valve is is open. The purpose of the choke device 22 is to prevent waste of air while the tank is being partly filled with gasoline. At a. safe point before the gasoline tank has approachedthe filling point, the

. choke device 22 should be released so that air will be flowing through the air tube ready to produce the whistling action at the proper time. Of course, it is not necessary at any time to choke off the flow of air by the choke device 22 inasmuch as the permanent cut out of the air discharge may be accomplished by closing the valve is. The choke device 22 is in very convenient position to be operated by the same hand that manipulates the gasoline nozzle and hence this choke device may be used as a means for cutting off and turning on the air independently of the valve I9.

The location of the open lower end of the whistle above the open lower end of the discharge nozzle prevents the lower end of the whistle from being filled with the delivered liquid by splashing and before the liquid level has reached pended claims. Also it will be understood that while the device is especially designed for use in connection with gasoline supply nozzles, that it may be used in connection with 'various other nozzles or devices for the delivery of fluids into sure, the) delivery .end oi. said fluid delivery nozzle being a flexible jointed structure, in which the nozzle cap has spring prongs detachably engaging the flexible nozzle portion, and in which said air tube is a flexible hose extended along said nozzle.

2. A flexible liquid deliveryhose having a discharge nozzle at its delivery end, a whistle applied to said nozzle and movable'therewith, said whistle having a normally open lower end located near to the normally open delivery end of said nozzle, and a 'fiexible air delivery tube extended along said nozzle and connected to the upper end of said whistle, whereby said nozzle and whistle are made portable as a common unit.

3. The structure defined in claim 2 in which the open lower end of said whistle is located ma- 

